Just found this in Stroud newspaper

3 Jul 2010

Months old.

4 Jul 2010

Yes I know it was from May, two months ago. However I had not seen it discussed anywhere, maybe I missed your highly informative posting about it on here, or maybe you didn't post anything when you saw it months ago, or maybe you hadn't seen it before either.

4 Jul 2010

I feel sure it was on here....but maybe I cannot be a**ed to look so far back in time....maybe you mean this sign

Fairly self-explanatory I think....even more so if you google barrow wake in google maps then move over to the left and use streetview to look at the carpark in question, and the road nearby......then drive down the road in streetview and wonder what all those people are doing parked at the side...note the trucker checking the cars driving past...
In fact as I've said before.....anyone doing daytime dogging/cruising NEEDS to check the streetview of the site they use....

5 Jul 2010

And you may like to read the Gloucestershire Police website...
It mentions things like "car park closed at night" and "cctv"
Yet another example of how a silly prank has the potential to backfire....